| Value | Category | Cases | |
|---|---|---|---|
| -9 | 2 | 
                                    
                                    4.5%
                                 | |
| 1 | 17 | 
                                    
                                    38.6%
                                 | |
| 2 | 25 | 
                                    
                                    56.8%
                                 | |
| Sysmiss | 171 |